/*
 * Copyright (C) 2015 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "AccessibilityTreeItem.h"

#include "AXObjectCache.h"
#include "HTMLNames.h"

namespace WebCore {

using namespace HTMLNames;

AccessibilityTreeItem::AccessibilityTreeItem(RenderObject* renderer)
    : AccessibilityRenderObject(renderer)
{
}

AccessibilityTreeItem::~AccessibilityTreeItem() = default;

Ref<AccessibilityTreeItem> AccessibilityTreeItem::create(RenderObject* renderer)
{
    return adoptRef(*new AccessibilityTreeItem(renderer));
}

AccessibilityRole AccessibilityTreeItem::determineAccessibilityRole()
{

    // Walk the parent chain looking for a parent that is a tree. A treeitem is
    // only considered valid if it is in a tree.
    AccessibilityObject* parent = nullptr;
    for (parent = parentObject(); parent && !parent->isTree(); parent = parent->parentObject()) { }
    m_isTreeItemValid = parent;

    return AccessibilityRenderObject::determineAccessibilityRole();
}

} // namespace WebCore
